Bobbin-cop.



0. A. HUNT, JR.

BOBBIN GOP.

APPLICATION FILED MAY 13, 1912.

1,124,448, Patented Jan; 12, .1915.

Attrneys THE NORRIS PETERS CO. PHOTO-LITHOHIWASHINGTON. D. c.

BESTAdii-lliABLE COP CHARLES A. HUNT, J 3., OF LEXINGTON, NORTH CAROLINA.

BOBBIN-COIP.

Specification of Letters Patent.

Application filed May 13, 1912. Serial No. 697,016.

To all whom it may concern Be it known .that I, CHARLES A. H U NT, Jr., a citizenof the United States, resldmg at Lexington, in the county of Davidson and v ,State of North Carolina, have lnvented a new. and useful Bobbin-Cop, of which' the following is a specification.

The. present invention appertains to bobbin cops.

It is the object of the present invention to provide a cop wound upon a bobbin in a unique. manner, whereby the cop yarn will betightly packed upon the bobbin, to supply the bobbin with more yarn, than is possible. with the usual mode of winding, and. whereby the yarn may readily be led off or removed from the bobbin.

In the accompanying drawings, illu'strat-' ing the, present invention Figure 1 is a side elevation of a bobbin and cop applied therediagram, illustrating the manner of applying thecourses to the bobbin. Fig. 3 is a. reduced fragmental view in diagram, illus" tratingthe manner in which the courses are laid upon each other. Fig. 4: is a view similar to Fig. 3, illustrating the common or old manner of applying the courses tothe bobbin.

Inthe drawing, the numeral 10 designates a bobbin of common construction and upon which is wound the cop, as illustrated in Fig. 1. The cop yarn 11 is applied to the bobbin 10, in a peculiar manner, whereby the cop comprises a longitudinal series of conical or tapered alternate progressive and retro-progressive courses 12 and 13, respectively, superposed or-laid one upon the other. Each progressive or upward course 12 comprises a series oi: alternate advanclng and receding or return spirals 14 and 15,

respectively, which are laid one upon the other, and which are conical or tapered,

similar to, but shorter in length than the courses themselves. The successive spirals or runs of each progressive, or advancing course 12, from the outer to the inner end of the respective course, have increased numbers of convolutions ior turns, andthe convolutions of the successive spirals are disposed or wound closer. together. In this manner, the: convolutions or turns of the progressive or advancing courses, will be packed tightly directly adjacent the bobbin, whilethe convolutions or turns at the circumference or surface of the cop, will be packed more loosely. Each of the retroprogressive or downward courses 13 embod ies a spiral having a relatively small number of spaced convolutions or turns, the retro-progressive course being provided intermediate its ends with a short reverse or return spiral or run 16, having a relatively large number of convolutions or turns which are arranged close together.

In applying the yarn to the bobbin, the rail carrying the bobbin, is raised and lowered in a peculiar manner to vary the traverse, and to this end, there is preferably employed the mechanism disclosed in the patent issued to Alfred L. Pickard under date of October 8', 1913, No. 1,061,687. The.

above mentioned patent, the yarn is started on the lower or butt end of the bobbin, and

the bobbin, while being rotated, is moved downwardly, and at the same time is given a reciprocatory movement, to apply the first conical or tapered progressive course 12 upon the bobbin, the number of revolutions of the bobbin during the successive reciprocatory movements being increased, and the longitudinal velocity of the bobbin. being correspondingly decreased, in order that the convolutions or turns of the successive spirals 14 and 15, will be increased, and will be arranged closer together, as above described. The bobbin is then moved longitudinally upward, to apply the succeeding retr o-progressive or return course 13 over the completed progressive course 12, the return movement of the bobbin, being. relatively fast, to apply the convolutions or turns of the retro-progressive courses loosely back over the progressive course previously completed. During the return movement of'the bobbin, the same is given a. single short re ciprocatory orv downward movement, to provide the reversespiral 16 of the retro-pro- Patented Jan. 12, 1915.

gressive or return course, as will be obvious. The foregoing operation constitutes one complete step of the method, and this step is repeated to build up the entire cop.

In the manner indicated, the traverse varies properly, to apply the yarn to the bobbin according to the present invention, the return or downward courses being shorter than the progressive or upward courses, in order that the courses will be laid or superposed one above the other in a longitudinal series of ZODGS. After each step forming a pair of progressive and retroprogressive courses or Zones, the operation is continued repeatedly until the entire cop has been built up.

As a result of the peculiar *inding of the yarn upon the bobbin, as above described, the yarn will be packed tightly about the bobbin, and will be packed looser at the periphery or surface of the cop, whereby, in connection with the formation of the spirals above indicated, a relatively large quantity of yarn will be carried by the bobbin to constitute the cop. The cop may thus include a considerably larger quantity of yarn, than is possible with the usual or common method of winding the yarn upon bobbins. The present invention also reduces to the minimum, the tendency for the yarn to break, either during Winding or unwinding, and also reduces tangling to a mlnimum.

The yarn may be readily led OK or unwound from the bobbin, each progressive course 12 furnishing a considerable quantity of yarn, due to the peculiar formation of its spirals, and notwithstanding the fact that the uppermost or inner spirals are of smaller diameter than the lowermost or outermost spirals, the uppermost or innermost spirals furnish practically the same amount of yarn as the others, due to the fact that the uppermost or innermost spirals have larger numbers of convolutions or turns and the convolutions or turns are arranged in closer relation, than the outermost spirals or runs. After the progressive course has been removed, the succeeding retro-progressive course will be removed, the same constituting but relatively few convolutions or turns in order to permit the yarn to readily unwind without danger of breaking, due to the pull occasioned by the unwinding of the retro-progressive or return convolutions of the retro-progressive course. The reverse spiral 16 off the retro-progressive course will relieve the yarn at the center or intermediate portion of the retro-progressive course, of any excessive strain, that may have been given the yarn in unwinding from the upper or outer portion of the retro-progressive course, inasmuch as the short spiral 16 has a progressive trend. Then, after the spiral 16 has been removed, the remainder of the retro-progressive course can unwind readily without liability of breakage. In this manner, the successive alternate progressive and i'etioprogressive courses will readily unwind from the bobbin in order that the yarn may be led off properly, and with a minimum danger of breakage or tangling. It is also to be noted that the convolutions or turns at the surface of the cop being spaced further apart, than those convolutions directly adjacent the bobbin, will prevent the outermost convolutions fro a being drawn between the underlying convolutions when the yarn is being wound upon the bobbin, which not infrequently re sults in tangling, breakage or other trouble.

The present cop will be firm, and the yarn mass will not be liable to become disarranged in the handling of the bobbin and cop, as is occasioned, with other objections, by the ordinary manner of winding the yarn upon the bobbin, as illustrated in Fig. 4. In this figure, the numeral 10 illustrates the ordinary bobbin and 11, the yarn, which is merely applied in progressive and retro-progressive courses 12 and 13, respectively, upon the bobbin.

What is claimed is 2-- 1. A bobbin and cop thereon, the cop comprising a series of conical alternate progressive and retro-progressive courses laid one upon the other, each progressive course comprising a series of alternate advancing and receding spirals laid one upon the other, the successive spirals from the outer to the inner end of the progressive course having increased numbers of convolutions, and the retro-progressive courses including spirals having relatively small numbers of convolutions.

2. A bobbin and cop thereon, the cop comprising a series of conical alternate progressive and retro-progressive courses laid one upon the other, each progressive course comprising a series of alternate advancing and receding spirals laid one upon the other, the successive spirals from the outer to the inner end of the progressive course having their convolutions arranged closed together, and the retro-progressive courses including spirals having relatively small numbers of convolutions.

3. A bobbin and cop thereon, the cop comprising a series of conical alternate progressive and retro-progressive courses laid one upon the other, each progressive course comprising a series of alternate advancing and receding spirals laid one upon the other, the successive spirals from the outer to the inner end of the progressive course having increased numbers of convolutions, and the convolutions of the successive spirals being arranged closer together, and the retro-progressive courses including spirals having relatively small numbers of convolutions.

A bobbin and cop thereon, the cop compr s ng a series of superposed conical alternate progressive and retroprogressive courses, the progressive courses comprising spirals, the convolutions of the said spirals adjoining the bobbin being arranged closer together than the outermost convolutions, and the retro-progressive courses including spirals having relatively small numbers of convolutions.

A bobbin and cop thereon, the cop comprising a series of superposed conical alternate. progressive and retro-progressive courses, the progressive courses comprising spirals, the convolutions of the said spirals adjoining the bobbin being arranged closer together than the outermost convolutions, the retro-progressive courses including spirals having relatively small numbers of convolutions, and each retro-progressive course including a reverse spiral intermediate its progressive ends and comprising a relatively large number of convolutions.

6. A bobbin and cop thereon, the cop comprising a series of superposed conical alternate progressive and retro -progressive courses, each progressive course comprising a series of alternate advancing and receding spirals laid one upon the other, the retrocourses including relatively small numbers of convolutions, and each retro-progressive course having intermediate its ends, a reverse spiral having a relativelylarge number of convolutions arranged close together.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in thepresence of tWo Witnesses.

" CHARLES A. HUNT, JR.

Witnesses W. H. MENDENHALL, A. H. MICHAEL.

Copies of thin patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

